Home / 147,613.47-203,470.83-99,783.78

Finding the Fourth Proportional to 147,613.47, 203,470.83 and 99,783.78

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Solution

The fourth proportional to 147,613.47, 203,470.83 and 99,783.78 is: 137,542.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,613.47 : 203,470.83 = 99,783.78 : x
  2. Step 2: Convert to fraction form
    147,613.47/203,470.83 = 99,783.78/x
  3. Step 3: Cross multiply
    147,613.47x = 203,470.83 × 99,783.78
  4. Step 4: Simplify right side
    147,613.47x = 20,303,088,537.14
  5. Step 5: Solve for x
    x = 20,303,088,537.14/147,613.47
  6. Step 6: Final answer
    x = 137,542.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.